Sci 512 Standard 1 Vocab

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Across
  1. 1. This moves throughout ecosystems, returns to the environment, and can be found everywhere.
  2. 5. The mixture of gases that surrounds Earth, shields UV light, traps heat, and prevents extreme temperature differences at night and day
  3. 6. Cycles freely between trophic levels in ecosystems and the environment.
  4. 7. total amount of water on the Earth, including the water underground, on the surface, and in the air
  5. 8. Flows through an ecosystem in one direction. Goes from one trophic level to the next.
Down
  1. 2. A thin stratum/layer of the atmosphere that supports all life on Earth. It is close to the surface.
  2. 3. The solid, rocky part of Earth
  3. 4. Dioxide Most common greenhouse gas